Application information, Zxld1370, A product line of diodes incorporated – Diodes ZXLD1370 User Manual
Page 37
ZXLD1370
Document number: DS32165 Rev. 5 - 2
37 of 39
September 2012
© Diodes Incorporated
ZXLD1370
A Product Line of
Diodes Incorporated
Application Information
(cont.)
Table 5: Bill of Material
700mA Buck-Boost LED Driver Typical Performance
Efficiency vs Input Voltage
0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
100%
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Input Voltage
E
ff
ic
ie
n
cy
Figure 47 Efficiency
LED Current vs Input Voltage
0
100
200
300
400
500
600
700
800
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Input Voltage
L
E
D Cu
rr
e
n
t
Figure 48 Line Regulation
Ref No.
Value
Part No.
Manufacturer
U1
60V LED driver
ZXLD1370
Diodes Inc
Q1
60V MOSFET
ZXMN6A25G
Diodes Inc
Q2
60V MOSFET
2N7002A
Diodes Inc
D1
100V 5A Schottky
PDS5100-13
Diodes Inc
Z1
47V 410mW Zener
BZT52C47
Diodes Inc
L1
22µH 2.1A
744771122
Wurth Electronik
C1
100pF 50V
SMD 0805/0603
Generic
C3 C9
4.7µF 50V X7R
SMD1210
Generic
C2
1µF 50V X7R
SMD1206
Generic
R1 R2 R3
300mΩ 1%
SMD1206
Generic
R9 33kΩ 1%
SMD 0805/0603
Generic
R10 15kΩ 1%
SMD 0805/0603
Generic
R12 0Ω SMD
0805/0603
Generic
R15 2.7kΩ SMD
0805/0603
Generic